I shouldn't say this.... but this past summer I planted a couple locust trees at my house, grown from seed, most likely I won't see them used as sills but someone might.

I do bolt down heavy sill, just use regular J-bolts in the concrete, I use the long nuts for threaded rod to extend a bolt the the surface of the sill, simple layout same as you would do for the sills.

Kind of funny... I have often found myself trying to make sure I get a fasten into the pt sill to tie the whole building down. On full length boards they are connected to the sill and top plate. Glad I don't live in a tornado ally or have poisonous snakes in the woods.